// ==UserScript==
// @name        HTML5 player for BBC News
// @match       http://www.bbc.com/*
// @version     2015.07.15
// @description Use a natively uncluttered hardware-accelerated player, no ads or annoyances. Also, easily downloadable videos.
// @grant       GM_xmlhttpRequest
// @namespace https://greasyfork.org/users/4813
// @downloadURL none
// ==/UserScript==


for (var i in (src = document.querySelectorAll('script:not([src])')))
{
    if (typeof src[i] !== 'object' || src[i].textContent.indexOf('externalId') === -1)
    {
        continue;
    }
    
    var vpid = src[i].textContent.match(/externalId":"([^"]+)"/)[1];
    
    console.log(i, vpid);
}
  
if (!vpid)
  throw 'BBC HTML5: nothing to do :)';
    
  GM_xmlhttpRequest(
  {
    method: 'GET',
    url: 'http://open.live.bbc.co.uk/mediaselector/5/select/version/2.0/vpid/' + vpid + '/format/json/mediaset/journalism-http-tablet/',

    onreadystatechange: function(e)
    {
      if (e.readyState !== XMLHttpRequest.DONE)
      {
        return;
      }

      this.responseJSON = JSON.parse(e.responseText);

      /* just for taking a look, please don't mind me! :-) */
      console.log(e, this.responseJSON);
      
      

      if (!this.responseJSON.media)
      {
        console.warn('BBC HTML5: the listing did not come with any video at all!', this.responseJSON); return;
      }

      /* add a download button per result video */
      for(var vid in this.responseJSON.media)
      {
        console.log(this.responseJSON.media, this.responseJS.media[vid]);
      /*
        dwnbutton = document.createElement("a");
        dwnbutton.setAttribute('style', 'padding-left: 35px; padding-right:12px');

        dwnbutton.textContent = 'Descargar [' + vid + ']';
        dwnbutton.className   = 'mar-l_10 fn_slide_link left btn_black icon_35 descarga';
        dwnbutton.href        = this.responseJSON.media[vid];
        dwnbutton.download    = document.querySelector('#imagen_modulo_player > img').alt + '.' + vid + '.mp4';

        / / * replace it on the page * / /
        dwnbuttonHolderElement = document.querySelector('.mod_producto_social > div > div');
        dwnbuttonHolderElement.appendChild(dwnbutton); */
      }
      
      var hq = 0;

      /* build our own html5 player with our own stuff */
      vplayer = document.createElement('video');

      vplayer.src      = this.responseJSON.media[hq].connection[0].href;
      vplayer.poster   = document.querySelector('#media-asset-placeholder').src;

      vplayer.controls = 'true';
      vplayer.volume   = '0.4';

      vplayer.height   = 549;
      vplayer.width    = 976;

      vplayer.style.marginBottom = '-2px';

      /* replace it on the page */
      videoHolderElement = document.querySelector('#media-asset-page-video');
      videoHolderElement.parentElement.replaceChild(vplayer, videoHolderElement);
    },

    onerror: function(e)
    {
      console.warn('BBC HTML5: Houston, we have an unidentified problem!', e);
    }
  });